Opeth's Mikael Akerfeldt announced today on Facebook that the long-anticipated collaboration between himself and Steven Wilson (of Porcupine Tree fame) will be released in Spring 2012:

"The long awaited collaboration between Mikael Akerfeldt and Steven Wilson (Porcupine Tree) is finally being completed. The project goes under the name of 'Storm Corrosion' and will have a self-titled record out in April 2012 through a yet unnamed label. This album could be seen as the final part in the odd trilogy of records completed by "Heritage" and Steven Wilson's brand new solo album "Grace for Drowning". Read more on Steve Wilson's latest venture at gracefordrowning.com"